Short answer: the W-King X10, though neither ranks well in its class. It ranks #94 of 113 boombox speakers by sound quality, rated 2.3/5, at $80; the Zealot S78 ranks #111, rated 2.0/5, and costs $91.38, so there is not much of a tradeoff to weigh. Both are rated below 3.0/5 among the 113 boombox speakers, and the Bugani Brief Pro, ranked #28 at $99.98, is a better place to start if sound quality matters.
The W-King X10 is the lighter pick. A cheap, waterproof stereo boombox with a very long battery, loud output and a power bank for charging your phone. At 6.5 lbs (2.95 kg) it weighs noticeably less than the Zealot S78 at 9.7 lbs (4.4 kg). The catch: Heavily rolled off treble, less bass than the top ranked.
Why pick the Zealot S78: A loud, rugged party speaker with full waterproofing, a power bank and wireless pairing for outdoor parties. The tradeoff: At high volume, reviews report distortion and fluctuating level, so its headline power is more useful below its maximum setting.
Buy the W-King X10. It is rated higher for sound quality than the Zealot S78 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Portable Bluetooth rankings.
Prices on this page were last checked November 14, 2026 at 6:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| W-King X10 | Zealot S78 | |
|---|---|---|
| Price | $80 | $91.38 |
| Ranked | #94 of 113 in Boombox Size Portable Bluetooth Speakers | #111 of 113 in Boombox Size Portable Bluetooth Speakers |
| Aux Input | Yes | Yes |
| Bass Extension (-10dB) | 52Hz | - |
| Battery Life | 42 hours (Manufacturer specified) | 40 hours (Manufacturer specified) |
| IP Rating | IPX6 | IP67 |
| Maximum SPL | 106dB (measured by Alan Ross Reviews) | - |
| MicroSD Playback | Yes | Yes |
| Power Bank | Yes (USB-A) | Yes (USB-A) |
| Stereo | Yes | Yes |
| Omnidirectional | No | No |
| TWS | Yes | Yes |
| Weight | 6.5 lbs (2.95 kg) | 9.7 lbs (4.4 kg) |
| Bluetooth | Yes | Yes |
| Bluetooth Codecs | SBC | SBC |
| App | No | No |
| EQ | Yes (2 modes - Indoor/Outdoor) | Yes (multiple modes) |
| Party Mode | No | No |
| USB Playback | Yes | Yes |
| Built-in Microphone | Yes | No |
| Power Input | USB-C | USB-C |
| FM Tuner | No | - |
| Bluetooth Version | 5.0 | 5.3 |
| Amplifier Power | 70W RMS (120W peak) | 120W RMS / 150W peak |
| Dimensions | 12.4” x 5.5” x 5.3” (315 x 140 x 135 mm) | 16.1” x 6.6” x 7.3” (410 x 167 x 185 mm) |
| Drivers | 2x 3.66” (93mm) subwoofers + 2x 1.2” (31mm) neodymium tweeters + 3x passive radiators | 2x ~120mm (4.72”) woofers + 2x ~42mm tweeters + 2x passive radiators |
| Digital Aux Input | No | No |
| Strap | Yes (detachable shoulder strap) | Yes (detachable shoulder strap) |
Where the Ratings Come From
- W-King X10: reviews by Alan Ross and Jay’s Straight Up Reviews & More.
- Zealot S78: reviews by Jay’s Straight Up Reviews & More.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
Related Speaker Comparisons
More worthwhile head-to-heads for W-King X10: